6533b833fe1ef96bd129b6c7
RESEARCH PRODUCT
High spin polarization in Co2CrAl–Cr superlattice
Xuefang DaiXuefang DaiClaudia FelserMartin Joudansubject
Acoustics and UltrasonicsSpin polarizationCondensed matter physicsMagnetic momentMagnetoresistanceChemistryMagnetismSuperlatticeGiant magnetoresistanceCondensed Matter PhysicsSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceFerromagnetismAntiferromagnetismCondensed Matter::Strongly Correlated ElectronsComputer Science::Databasesdescription
The electronic structure, magnetic properties and interface effects in Co2CrAl?Cr superstructures have been investigated by the use of first principle calculations. The results show that at the interface, a large magnetic moment and a high spin polarization can be induced by a strong ferromagnetic exchange interaction at the Cr?Co interface. However, at the CrAl?Cr interface, both the magnetic moment and the spin polarization of the Cr atoms are decreased due to a Cr?Cr antiferromagnetic interaction. It can also be found that the interface effect is only a short range effect. So, high spin polarization in Co2CrAl?Cr superlattice can be obtained. Based on this theoretical analysis, a large giant magnetoresistance effect can be expected in the Co2CrAl?Cr superlattices with proper thickness of the Cr spacer layers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-03-30 | Journal of Physics D: Applied Physics |